
There are multiple sedation options your dentist can provide. With nitrous oxide, you will be aware of what is happening, but relaxed. The gas is applied during your treatment, and will wear off in enough time for you to drive yourself home. Sedation medicines can also be taken orally, or intravenously. These can cause varying degrees of drowsiness, and you will need someone to drive you to and from your appointment.
Problems with your oral health can worsen when you put off treatment. The longer you leave a cavity unaddressed, the more it can spread. If the cavity is left untreated for long enough, you may need a root canal to remove an infection in the interior of your tooth. If you deal with habitual jaw clenching, also known as bruxism, and do not see your dentist, your teeth can become dulled from the constant grinding. They could become damaged enough to require a cosmetic treatment.